In his botanical laboratory at the University of Chicago, Professor George Konrad Karl Link recently made a discovery which he considered so noteworthy that he sent a report of it all the way to England, where it was published in the issue of Nature which came back to the U. S. last week. Dr. Link had found a plant hormone called heteroauxin, previously found elsewhere, in the nodules of red kidney beans. When applied to the bean roots, a paste containing the hormone caused bending, coiling, vertical retardation of root growth, lateral...
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